Chemistry, 07.01.2020 18:31 liyah7771

What happens in a combustion reaction? why is incomplete combustion a problem?

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Answer from: Arealbot

4CH₄ + 5O₂ > 2CO + 8H₂O + 2Cpoisonous for health

Explanation:

Combustion Reaction:

combustion is an exothermic reaction that is a reaction of fuel with oxygen. In this an amount of heat produced along with the production of carbon dioxide and water

As Shown in the reaction

CH₄ + 2O₂ > CO₂ + 2H₂O + heat

The heat in this reaction is equal to -418 KJ/mol

Incomplete Combustion Reaction:

In this type of reaction the reaction occur in insufficient amount of oxygen that complete fuel not burnt to produce energy.

In Incomplete combustion the fuel not react completely to produce CO₂ and 2H₂O instead it produce CO and water with carbon

As Shown in the reaction

4CH₄ + 5O₂ > 2CO + 8H₂O + 2C

incomplete combustion a problem

This is a problem because of the following reasons

Fuel not react completely and not produce required energyincomplete combustion is waste of fuel as it not used completely and produce carbon.It also hazardous for health as well as for environment as CO produced in this reaction that have more affinity to hemoglobin then oxygen and stop respiration in humans. It also cause of acid rain.CO and water also known as water gas that is poisonous for chemical operating systems too

Answer from: Quest

answer: the figure is attached herewith.

step-by-step explanation: we are given to sketch a unit circle and label the terminal points corresponding to

$\theta=\dfrac{\pi}{3},~2\dfrac{\pi}{3},~3\dfrac{\pi}{3},~4\dfrac{\pi}{3},~5\dfrac{\pi}{3}.\\\\\\\rightarrow \theta=60^\circ,12^\circ,180^\circ,240^\circ,300^\circ.$

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.

Answer from: Quest

a polar bond is formed when electrons are shared unevenly between atoms

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Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)⇌cocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 ∘c . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction